Home / 12,733.12-19,100.40-7,799.68

Finding the Fourth Proportional to 12,733.12, 19,100.40 and 7,799.68

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Solution

The fourth proportional to 12,733.12, 19,100.40 and 7,799.68 is: 11,699.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,733.12 : 19,100.40 = 7,799.68 : x
  2. Step 2: Convert to fraction form
    12,733.12/19,100.40 = 7,799.68/x
  3. Step 3: Cross multiply
    12,733.12x = 19,100.40 × 7,799.68
  4. Step 4: Simplify right side
    12,733.12x = 148,977,007.87
  5. Step 5: Solve for x
    x = 148,977,007.87/12,733.12
  6. Step 6: Final answer
    x = 11,699.96

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.